diff --git a/oeps/architectural-decisions/oep-0057-cores-and-extensions.rst b/oeps/architectural-decisions/oep-0057-cores-and-extensions.rst
new file mode 100644
index 000000000..905a26494
--- /dev/null
+++ b/oeps/architectural-decisions/oep-0057-cores-and-extensions.rst
@@ -0,0 +1,107 @@
+
+OEP-57: Cores and Extensions
+############################
+
+.. list-table::
+   :widths: 25 75
+
+   * - OEP
+     - :doc:`OEP-57 <oep-0057-cores-and-extensions.rst`_
+   * - Title
+     - Cores and Extensions
+   * - Last Modified
+     - 2022-08-??
+   * - Authors
+     - Kyle McCormick <kyle@tcril.org>
+   * - Arbiter
+     - TBD <tbd@openedx.org>
+   * - Status
+     - Draft
+   * - Type
+     - Architecture
+   * - Created
+     - 2022-08-??
+   * - Review Period
+     - 2022-??-?? - 2022-??-??
+   * - Resolution
+     - TBD
+   * - References
+     - TBD
+
+Abstract
+********
+
+We designate four classes of Open edX repositories:
+
+1. logistical repositories,
+2. kernel repositories,
+3. bundled extension repositories,
+4. official extension repositories, and
+5. unofficial extension repositories.
+
+We mandate that:
+
+* The `openedx GitHub organization` shall contain precisely classes 1-4.
+* All code in the `openedx GitHub organization` is subject the decisions made in OEPs.
+* The Open edX Named Release shall include classes 2-4.
+* The *Core Product Offering*, as defined by the Product Working Group, shall be supported by the code in classes 2-3.
+* The *Exteneded Product Offering*, as defined by the Product Working Group, shall be supported by the code in classes 2-4.
+
+.. _openedx GitHub organization: https://github.com/openedx
+
+
+Motivation
+**********
+
+The Open edX project is comprised of nearly two hundred repositories that, together, contain millions of lines of code.
+Each repository increases the effort required to maintain the project and the cognitive load required to understand the project.
+
+
+Specification
+*************
+
+.. The specification describes the technical details of the Architecture, Best
+.. Practice or Process proposed by the OEP. If the proposal includes a new API,
+.. specify its syntax and semantics.
+
+Rationale
+*********
+
+.. The rationale adds to the specification by describing the events or
+.. requirements that led to the proposal, what influenced the design, and why
+.. particular design decisions were made. The rationale could provide evidence
+.. of consensus within the community and discuss important objections or
+.. concerns raised during discussion. It could identify any related work,
+.. for example, how the feature is supported in other systems.
+
+Backward Compatibility
+**********************
+
+.. This statement identifies whether the proposed change is backward compatible.
+.. An OEP that introduces backward incompatibilities must describe the
+.. incompatibilities, with their severity and an explanation of how you propose to
+.. address these incompatibilities.
+
+Reference Implementation
+************************
+
+.. The reference implementation must be completed before any OEP is given "Final"
+.. status, but it need not be completed before the OEP is "Accepted". While there is
+.. merit to the approach of reaching consensus on the specification and rationale
+.. before writing code, the principle of "rough consensus and running code" is
+.. still useful when it comes to resolving many discussions.
+
+Rejected Alternatives
+*********************
+
+.. This statement describes any alternative designs or implementations that were
+.. considered and rejected, and why they were not chosen.
+
+Change History
+**************
+
+2022-08-??
+==========
+
+* Document created
+* `Pull request #XXX <https://github.com/openedx/open-edx-proposals/pull/XXX>`_